Apparatus for developing winding coils

ABSTRACT

A high speed winding machine for developing or generating coil groups each comprising one or more coils each having one or more turns of winding material. The turns are developed and placed on coil turn receiving means such as coil injection tooling or a coil transfer mechanism with or without auxiliary coil shaping means. The apparatus may be advantageously utilized in the manufacture of wound inductive devices, e.g., dynamoelectric machines such as motors. An illustrated preferred embodiment includes a frame, a coil form support having auxiliary coil shaping means embodied as a coil form mounted thereon for axial movement relative to the frame, and a flyer rotatable about a central axis for developing wire turns on the coil form. In order to prevent rotation of the coil form, located in the vicinity of the central axis, with the rotating flyer and a rotating wire feed tube, a migrating mechanical linkage is provided between the frame and coil form support to prevent rotation of the coil form with the rotating flyer. The illustrated migrating linkage includes a carriage which supports a wobble face gear and is rotatable relative to the gear. The wobble gear is provided with teeth on opposite faces thereof and the teeth on one face of the wobble gear mesh with the stationary gear teeth on the frame while teeth on the other face of the wobble gear engage the gear on the coil form support. The stationary gear teeth and gear teeth on the coil form support are spaced apart and the wobble gear extends between the spaced gears so that portions of the wobble gear spaced 180* apart engage the stationary gear teeth and gear teeth on the coil form, respectively. The wobble gear carriage is canted relative to the central axis and as it rotates it drives succeeding teeth on the faces of the wobble gear into engagement with succeeding ones of the stationary and coil form support gear teeth. As the carriage rotates with the flyer, the wobble gear executes a rotationless wobble motion synchronized with the flyer. This motion results in a moving shutter, synchronized with the flyer, through which wire is fed to the flyer.

-Att0rneyJohn M. Stoudt,

Arnold et al.

[54] APPARATUS FOR DEVELOPING WINDING COILS [75] Inventors: Richard B. Arnold; Dallas F. Smith,

both of Fort Wayne, Ind.

' [73] Assignee: General Electric Company, Fort Wayne, Ind.

[22] Filed: Apr. 1,1971

[21] App1.No.: 130,399

[52] U.S. Cl ..140/92.1 [51] Int. Cl. ..B2lf 3/04 [58] Field of Search ..140/92.1; 74/800 [56] References Cited UNITED STATES PATENTS 2,836,204 5/1958 Mason ..l40/92.1

2,699,690 1/1955 Kobler ..74/800 3,625,261 12/1971 Hill et al.... ....140/92.1 3,538,959 11/1970 Eminger.... ....140/92.1 3,387,634 6/1968 Hilsenberg ....l40/92.2 3,481,372 12/1969 Emlinger et al.. ....140/92.1 3,522,650 8/1970 Cutler et al ..29/596 3,532,005 10/1970 Bremner et al 74/640 Primary ExaminerLowell A. Larson Radford M. Heams, Ralph E. Krisher, J12, Joseph B. Forman, Frank L. Neuhauser and Oscar B. Waddell [57] ABSTRACT receiving means such as coil injection tooling or a coil transfer mechanism with or without auxiliary coil shaping means. The apparatus may be advantageously utilized in the manufacture of wound inductive devices, e.g., dynamoelectric machines such as motors. An illustrated preferred embodiment includes a frame, a coil form support having auxiliary coil shaping means embodied as a coil form'mounted thereon for axial movement relative to the frame, and a flyer rotatable about a central axis for developing wire turns on the coil form. In order to prevent rotationof the coil form, located in the vicinity of the central axis, with the rotating flyer and a rotating wire feed tube, a migrating mechanical linkage is provided between the frame and coil form support to prevent rotation of the coil form with the rotating flyer. The illustrated migrating linkage includes a carriage which supports a wobble face gear and is rotatable relative to the gear. The wobble gear is provided with teeth on opposite faces thereof and the teeth on one face of the wobble gear mesh with the stationary gear teeth on the frame while teeth on the other face of the wobble gear engage the gear on the coil form support. The stationary gear teeth and gear teeth on the coil form support are spaced apart and the wobble gear extends between the spaced gears so that portions of the wobble gear spaced 180 apart engage the stationary gear teeth and gear teeth on the coil form, respectively. The wobble gear carriage is canted relative to the central axis and as it rotates it drives succeeding teeth on the faces of the wobble gear into engagement with succeeding ones of the stationary and coil form support gear teeth. As the carriage rotates with the flyer, the wobble gear executes a rotationless wobble motion synchronized with the flyer. This motion results in a moving shutter, synchronized with the flyer, through which wire is fed to the flyer.

11 Claims, 5 Drawing Figures PATENTEB HAYY 51973 SHEET 1 OF 3 Inventor-s; FF/ ha/"d 5. Arnold, D llas F. Smith,

B5 @MM 91.

Attorn PATENTED 51975 3, 732 897 SHEET 2 OF 3 Ir lventor's: Richard B Arnold, Dallas F. Sm/th,

Attorney.

PATENTED J 51w 3'. v3.2 as? SHEET 3 BF 3 F Inventor's:

Dallas F. Smith, J 8/ B J;

APPARATUS FOR DEVELOPING WINDING COILS BACKGROUND OF THE INVENTION The present invention relates generally to improved apparatus for developing one or more coils in one or more coil groups and more particularly to a machine for developing coils that may be used as the winding in an inductive device, one example of which are dynamoelectric machine windings. More specifically, the present invention relates to high speed winding equipment having means for synchronizing a wire accommodating opening or shutter with movement of aflyer.

One prior art winding machine arrangement is illustrated in Smith US. Pat. No. 3,5 l0,939'. This patent illustrates winding coils on a coil form which is supported by an axially movable support member which in turn is coaxial with and internal to a flyer drive shaft. A flyer coupled with the drive shaft is rotatable about a central axis and develops coils of wire on the coil form. Developed coil turns are transferred from the free end of the coil form to a coil receiver either while other turns in the same coil are being developed or upon completion of the development of a given coil.

After having received the coilturns, the coil receiver is moved to a coil inserting or coil inject machine such as that disclosed in the Hill US. Pat. No. 3,324,536. Since a number of different size coils for a given coil group to be used to formone pole of an electric motor are often developed on a single form, the coil form is provided With steps or stages and relative axial movement between the form and flyer is effected so as to develop the different coils withina coil. group.

In the aforementioned Smith machine, the form is moved in several steps, and may begin with the form retracted toward the head structure of the machine. Then, as all of the turns for one coil-are developed, the form would be moved one incremental step toward the coil receiver and the turns of a second coil would be developed. This stepping process would be repeated until a coil group for one pole would have been developed. This stepping process, of course, requires the coil form support structure to be movable axially.

The drive shaft which imparts rotary motion to the flyer is a tubular shaft surrounding the support. shaft for the coil form and wire is fed from a wire source along this tubular drive shaft to the flyer. This wire feed path is preferably kept close to the axis of the flyer drive shaft and coil form support so as to prevent undue stresses caused by bending and/or twisting of the wire as the flyer and drive shaft rotate.

There have been provided a series of stops which establish and control the incremental axial movement of the coil form and relatively complex means for preventing rotation of thecoil form support structure. One way to prevent the rotation of the coil form would be to provide a holding mechanism for cooperation with the free or unsupported end of the coil form, but such an arrangement would interfere with the desired interrelationships between the coil form and coil receiver and particularly would interfere with the movement of developed coil turns to the coil turn receiver.

In the aforementioned Smith patent one disclosed means for preventing rotation of a coil form included pairs of cam operated shuttle bars which sequentially locked the coil form support structure to the machine frame while providing a gap between the coil form support structure and the machine frame opposite the instantaneous shuttle bar locking point through which gap wire could be fed to the flyer. As the flyer rotated, the shuttle bars reciprocated between diametrically opposed locking points and thus accelerated in a first direction, stopped and latched, and then accelerated in a direction opposite to the first, stopped, and latched again for each revolution of the flyer. While quite effective, the stresses and vibrations due to inertial forces involved with this arrangement established, as a practi cal matter, an upper limit to the speed of operation of the entire apparatus.

Cam operated shuttle bars were also utilized in our copending application Ser. No. 806,057, filed Mar. 1 l, 1969 and entitled METHOD AND APPARATUS FOR FORMING SHAPED INSULATORS AND FOR DE- VELOPING COILS OF A MAGNETIC CORE. This application issued as U. S. Pat. No. 3,579,818 on May 25, 1971. To prevent rotation of a coil form with a flyer as disclosed in our copending application, a coil form cooperates with an insertion tooling mechanism, e.g., injection tooling. It will be appreciated that in addition to limiting speed of operation, linearly reciprocating shuttle bars will also be a continuing cyclical stress generating source at all speeds of operation and will thus havea tendency at least to be a source of undesired noise as well as vibrations which can have a continuing deleterious afi'ectover a period of time on other parts of the apparatus, including for example, hydraulic and pneumatic seals and connections, electrical connections, and mechanical elements and adjustments.

Although the foregoing background description has been in connection with apparatus and methods that are of particular utility in the dynamoelectric machine winding art, it will be appreciated that it would be desirable to provide an improved machine that may be utilized to overcome similar or related problems in other applications.

Accordingly, it is a general object of the present invention to provide a winding machine capable of greater operational speeds than heretofore.

It is another object of the present invention to provide a winding machine wherein a mechanism provides a continuously moving opening for the movement of winding material therethrough with the mechanism 1 stopping and starting only when a winding flyer stops and starts.

Still another object of the present invention is to provide a machine having means extending between axially spaced apart first and second members for preventing relative rotation between the first and second members while allowing rotation of a wire handling structure which lies axially between the first and second members and extends radially beyond the axis of rotation of the wire handling structure.

It is a further object of the present invention to eliminate at least some of the inertial shock loads associated with reciprocating rotation preventing structures used heretofore with coil winding machines.

A more specific object of the present invention is to provide a moving shuttle mechanism movable continuously with the flyer of a winding machine through which winding material is fed to the flyer.

SUMMARY OF THE INVENTION In accordance with one form of our invention, we have provided an improved machine for developing groups of coils of winding material wherein winding material is fed to a rotating flyer. The material is fed along a path generally parallel and in proximity to an axis of rotation of the machine and radially away from the axis of rotation between a first stationary machine element or mechanism and a second machine element or mechanism restrained from synchronous movement with the flyer by shutter means which extend between and constantly engage the first and second machine elements. In a preferred form, the first machine element includes a first meshing surface in the form of a face gear, held fixed relative to the machine frame. The second machine element includes a meshing surface in the form of a second face gear secured to a coil form, and the shutter means is in the form of an intermeshing member having two spaced apart oppositely facing surfaces each of which respectively engage and mesh with the face gears. With the two face gears lying in spaced apart parallel planes, the intermeshing member lies in a plane intersecting the two parallel planes and is supported by a nonrotatable bearing race which is eccentrically supported relative to the axis of rotation by a bearing race which rotates in synchronism with the flyer. During machine operation, the nonrotatable bearing race executes a rotationless wobble motion which is imparted to the intermeshing member. The intermeshing member then defines a shutter synchronously movable with the flyer, through which winding material is fed to the arm of the flyer. In this preferred embodiment, linearly reciprocating masses are avoided in the shutter defining means and undesirable ramifications thereof, such as vibration, and cyclincal inertial stresses are substantially eliminated.

The subject matter which we regard as our invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. Our invention itself, however, both as to its organization and method of operation, together with further objects and advantages thereof, may best be understood by reference to the'following description taken in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front perspective view of a winding machine embodying the present invention in a preferred form;

FIG. 2 is an elevational view partially in section, of the winding machine head portion of the machine shown in FIG. 1;

FIG. 3 is a somewhat perspective view representative of the motion which portions of the machine head shown in FIG. 2 undergo during machine operation;

FIG. 4 is a view, partially in section, taken in the direction of the line 44 in FIG. 3; and

FIG. 5 is an exploded perspective view of the machine elements shown in FIG. 3.

DESCRIPTION OF THE PREFERRED EMBODIMENT With reference to FIG. 1, a coil winding machine particularly adapted for developing winding coil turns for dynamoelectric machine stators and embodying the present invention, in one form, includes a machine frame 11 which supports auxiliary coil shaping means illustrated as a coil form 29 about which flyer means including flyer arm 13 is rotatable. The axis of revolution 15 (best seen in FIG. 2) of the flyer 13 may be horizontal but as illustrated is vertical as in the case of the flyer in the apparatus shown in our aforementioned copending application, the entire disclosure of which application is specifically incorporated herein by reference. The coil form 29 of the machine 11 has sections for interfitting and cooperating with coil receiving means that, as illustrated, include the vertically extending blades of a coil transfer mechanism 71. This mechanism is supported by a vertically movable transfer mechanism support structure 73. The structure 73 is operative to raise the coil transfer mechanism into intermeshing relationship with the coil form 29 for receiving developed winding turns. When a coil group for one pole of a stator has been received in the transfer mechanism, the support structure 73 rotates the coil transfer mechanism in preparation for receiving the coils developed for another coil group.

When the transfer mechanism has received all of the coils which are to be subsequently assembled with a magnetic core, for example, inserted into the slots of a dynarnoelectric machine core, the support 73 lowers somewhat so that the transfer mechanism 71 may be removed by an operator and transferred to a coil insertion station. Many of the principles of overall operation of the winding machine 11 are similar to those of the aforementioned Smith device although the machine axis 15 is vertical rather than horizontal and may, of course, include structural arrangements disclosed in our aforementioned copending application. For example, coil injection tooling or still other coil turn receiver means may receive coil turns developed from wire fed to the flyer 13.

A pair of electric motors 75 and 79 supply the power requirements of the present machine either by way of direct mechanical linkages such as a belt drive to the flyer mechanism 13 from the motor 75 or by a pneumatic system controlled for example by solenoid operated valves such as the valves in the valve banks 81 and 83 which serve to gate energy from a pressurized fluid supply to the pneumatically operated mechanisms within the machine 1 1. The pressure fluid system and controls in the machine 11 may be arranged for pneumatic or hydraulic operation, but in either case the physical operation and control is basically as described in Smith US. Pat. No. 3,510,939. The mechanism which rotates the transfer mechanism 71 is a pneumatic drive mechanism controlled by one of the valves in the valve bank 81 which, as will be understood, in turn is energized by a not shown logic circuit upon the completion of the development of a coil group. As best shown in FIG. 1, a pneumatic cylinder is operative, upon actuation of the proper valve in valve bank 83, to drive a bearing plate 101 carried by the coil form jump tube 50 (better shown in FIG. 2) against retractable stops 102, 103, 104. During operation, the coil form or arbor 29 is jumped downwardly upon sequential retraction of the stops 102, 103, 104 which also are pneumatically controlled. As viewed in FIG. 1, however, the cylinder 100 has retracted the bearing plate 101 to its uppermost initial position. There are numerous other control functions preformed in a complete cycle of operation of the machine 11. However, these other control functions either are well-known in the art or fully described in the aforementioned Smith patent and our copending application.

Also illustrated in FIG. 1 is a control panel 87 by means of which an operator may, for example, set the number of turns required for each coil in a coil group.

Machine operation is initiated by simultaneous two handed energization of the switches 89 and 91. A wire source such as a large drum 77 supplies wire along a wire guide 93 around two pulleys or other wire guides 95 and 97 and then downwardly substantially parallel to and adjacent to the axis of rotation of the fiyer 13 to the flyer.

Turning now to FIG. 2, the fiyer 13 is rotatably driven about the axis 15 by a tubular flyer drive shaft 17 which in turn is driven, for example, by the electric motor 75 of FIG. 1. The entire flyer means including the flyer 13, the drive shaft 17 and flyer supporting structure 67 and 69 is illustrated cross hatched throughout in the same manner to more clearly show which portions of the machine rotate together. The entire flyer means is rotatably supported by the frame by way of rotary bearings 19 and 21. Wire from the source 77 shown in FIG. 1 is fed along the tubular drive shaft in a wire passage 23 which eventually bends and progresses radially outwardly along the structure which affixes or couples the actual flyer 13 to the flyer drive shaft 17. This wire feed path is then deviated twice within the fiyer by two wire guides 25 and 27. From this last wire guide 27 the wire is fed as the flyer rotates and coil turns are developed about the coil form 29.

The coil form 29 is secured to a base 33 locked against rotation relative to a second member 31. The coil form base 33 is movable axially relative to the second member 31 but relative rotation of these two portions of the coil form support means is prevented by a pin 35 secured to the base 33 which mates with a corresponding hole 37 in the base 33 of the coil form support structure, the hole 37 extending sufficiently far into the second member 31 to allow the desired amount of relative axial motion between the members 31 and 33 and yet prevent any rotation therebetween. The coil form support structure 31 remains stationary while the flyer 13 rotates in order to promote the desired development of coil turns, this relative rotation being allowed while maintaining rugged support for the coil form and flyer by a series of rotary bearings 39, 41, and 43.

Sleeve bearings and 47 allow relative axial motion between the base 33 and second member 31. An axial rod 49 is the innermost of a series of concentric members 49, 51, and 17 which extend generally along the axis 15. The axial rod 49 is movable axially relative to the coil form 29 to ensure that all of the coil turns developed during a coil winding cycle are received in the coilreceiving means. The axial rod 49 and jump tube 51 may be moved together axially to move the coil form 29 axially relative to the flyer for winding coils having varying pitches or turn diameters on successive ledges of the coil form. The provision for this operation is also fully discussed in the aforementioned Smith patent. The last or outer axial tube 17 is, as presented earlier, supported for rotary motion about the axis 15 and does not undergo axial displacement.

In addition to supporting the flyer 13, the flyer drive shaft or outer axial tube 17 supports in a fixed manner an eccentrically mounted rotatable bearing support structure 53 which in turn supports the rotatable races for a pair of rotary bearings 55 and 57. This support structure or frame 53 is canted with respect to the axis 15 having its own axis inclined thereto at an angle of, about 5 degrees which, as will be understood, may be varied as desired. The outer races of the bearings 55 and 57 rotatably support a collar 59 to which is affixed an annular member 61 having two oppositely facing meshing means that are illustrated in the form of annular gear teeth as readily seen in FIG. 5. Thus, as so far described, the frame 53 rotates with the tube 17 and due to the canted relationship of the frame 53 relative to the axis 15, the high and low points of the frame 53 relative to the coil form 31, will rotate about the axis 15.

The annular member 61 will execute a wobbling nonrotary motion about the tubular flyer drive shaft 17 as the shaft rotates. This motion is nonrotary because the member 61 is locked against rotation by reason of its engagement with stationary meshing means shown as the face gear 63 secured to the machine frame. The face gear 63 gear surface is substantially perpendicular to and centered about the axis 15. It will be understood that the intermeshing surfaces or teeth on the members 61 and 63 may be a series of spherical protrusions and corresponding spherical indentations or other slip preventing meshing surface configurations.

The first portion of the coil form support member 31 is provided with a meshing surface in the form of a toothed surface 65 of annular configuration which meshes with the lower toothed surface of the annular member 61 as viewed in FIG. 2. By this means, the coil form is restrained from rotating with the flyer assembly.

The flyer 13 is supported on a drum like structure 67 having an end 69. This end 69 is not radially symmetrical but rather, in the position illustrated in FIG. 2, has portions removed to allow the facing teeth of the gears 61 and 65 to intermesh while the diametrically opposite teeth on the gear 61 intermesh withthe gear 63. While in this position, there is sufficient room between the face of gear 61 and the gear 65 at the left side of FIG. 2 to allow the wire guide portion of support end 69 to pass between the gears 61 and 65. This portion of end 69 is attached to the flyer drive shaft 17 and the flyer 13. As illustrated, this region between the gears 61 and 65 may be utilized as an open shutterfor feeding wire radially outwardly relative to axis 15 and between the gears 61 and 65. The wire feed path 23 extends from the wire source 77 along the flyer drive shaft 17 through the annular gear structure 61 and then radially outwardly along the flyer support 69 to the flyer.

Imagine now that the flyer drive shaft 17, flyer 13, and all parts mechanically coupled thereto execute a 180 of revolution about the axis 15 from the position illustrated in FIG. 2. Under these circumstances, the flyer support structure 69 and the radially extending portion of the wire passageway 23 would be on the right-hand side of FIG. 2 as shown in broken lines in FIG. 2 and due to the l80 revolution of the support 53 the annular member 61 would be contacting the gear surface 63 at the right-hand side of FIG. 2 and contacting the gear surface 65 at the left-hand side of FIG. 2. Viewed in this manner, it is readily seen that the supported annular member 61 forms a shutter which rotates synchronously with the flyer assembly. It should also be clear that regardless of the particular rotational orientation of the flyer and related parts the gears 61, 63 and 65 are always intermeshed. Since the annular gear 61 always contacts each of the gears 63 and 65, it

prevents rotation of the coil form 31 relative to the orientation shown in FIG. 1 as well as the orientation 180 removed therefrom and discussed above. These two figures illustrate clearly that at all times the wire passage 23 extends radially between the shutter defining members 61, 65. Thus, a nonrotaty wobble motion on the part of the annular member 61 is synchronized with the movement of the wire passage and flyer.

It should now be apparent that the illustrated embodiment includes a migrating linkage that prevents rotation between two members and yet allows winding material to pass radially outwardly of and between these two members in synchronization with the migration of the linkage.

Numerous modifications of the disclosed preferred embodiment will be apparent to those of ordinary skill in the art having the present disclosure before them.

For example, referring to FIG. 4, all four toothed gear surfaces are illustrated as having the same general configuration and pitch, but, the intermeshing portions of gears 61 and 63 might for example have a pitch half that of the intermeshing portions of the gears 61 and 65. Furthermore, the gear 61 might be deleted and in its place a pair of intermeshing gears be provided having two parallel axes that are perpendicular to the machine axis 15. One of these gears would mesh with the gear surface 63 and the other gear would mesh with the gear surface 65. The carriage for these two gears would, of course, be supported on the flyer drive shaft 17 for rotation therewith so that the axes of the gears would move through two parallel planes perpendicular to the axis 15.

On the other hand, a pair of gears locked or keyed on a common shaft which is parallel to but removed from the machine axis could be used so long as the pair of gears is supported by and rotates with the flyer struc-' ture and each meshes with a gear structure on the frame and coil form support. In still another form, strain wave gearing techniques may be utilized. For example, a deformable gear might be forced into intermeshing relationship with a nondeformable gear by a gear deformer carried by the flyer mechanism, or a flexible spline arrangement may be used.

The foregoing as well as other modifications should now readily suggest themselves to those of ordinary skill in the art and accordingly, the scope of the present invention should be measured only by that of the appended claims.

What we claim as new and desire to secure by Letters Patent of the United States is:

1. Apparatus for developing turns of winding material for ultimate assembly with a magnetic core, the apparatus comprising a machine frame; flyer means rotatable about a first axis of rotation for developing winding turns about the first axis of rotation; winding material guiding means directing winding material in a direction generally radially relative to the first axis of rotation; a drive member rotatable about the first axis of rotation and extending longitudinally in the direction of the first axis of rotation for supplying motive power to the flyer means; a first device including coil shaping means about which at least a portion of the flyer means is movable; and meshing means interconnecting said first device and machine frame for locking said coil shaping means against rotation about the first axis of rotation during movement of the flyer means and for establishing an unobstructed generally radially directed shutter passage, continuously movable along a predetermined path in synchronismwith the flyer means, through which winding material may be fed generally radially relative to the first axis of rotation; said meshing means including first and second members spaced axially apart along the first axis and wobble means; the first member being secured against rotation relative to the machine frame and having a meshing surface extending around the first axis; the second member being secured against rotation relative to the coil shaping means and having a meshing surface extending around the first axis; and said wobble means meshing continuously with the meshing surfaces of the first and second members and constraining the second member from rotation about the first axis relative to the first member; said wobble means including a carrier having first and second bearing parts concentrically disposed about a second axis disposed in non-parallel relation to the first axis of rotation, the first bearing part being locked for rotation with said drive member and the second bear- I ing part being constrained from rotation by the meshing of the wobble means and the first member; rotation of the first bearing part relative to the second bearing part causing the second bearing part to execute a rotationless wobble motion during rotation of the flyer means; said guiding means, wobble means, and flyer means all being movable in synchronism with one another, with the wobble means establishing the unobstructed substantially radially directed shutter passage for winding material being fed generally radially between the axially spaced apart first and second members.

2. The structure of claim 1 wherein the first and second members each include a gear face comprised of a plurality of gear teeth and the wobble means includes gear teeth meshed with the gear teeth of the first and second members.

3. The structure of claim 1 wherein the first member comprises a first gear face, the second member comprises a second gear face, and the wobble means comprises at least one pair of gear faces supported by the carrier and interconnected to prevent relative movement there-between, said at least one pair of gear faces comprising third and fourth gear faces; the first and third gear faces each having the same number of teeth and meshing with one another, and the second and fourth gear faces each having the same number of teeth and meshing with one another.

4. The structure of claim 1 wherein the coil shaping means and flyer means are relatively movable in an axial direction.

5. The structureof claim 1 wherein the first and second bearing parts mutually trap a plurality of antifriction bearing members.

6. Apparatus for developing turns of winding mate rial for ultimate assembly with a magnetic core, the apparatus comprising a machine frame; flyer means for developing winding turns about a first axis of rotation; a first mechanism about which a portion of the flyer means is movable; means for locking said first mechanism against angular movement relative to the frame, and for establishing a shutter opening, continuously movable along a predetermined path in synchronism with the flyer means, through which segments of winding material may be fed from a first region proximate to the first axis to a second region spaced a different radial distance from the axis than the first region; a first gear surface carried by the machine frame; a second gear surface carried by the first mechanism; the means for locking including a locking structure comprising a single carriage and at least one pair of gear surfaces comprising third and fourth gear surfaces supported by said carriage; the third gear surface meshing with the first gear surface, and the fourth gear surface meshing with the second gear surface; the flyer means including a flyer drive shaft rotatable about the first axis of rotation, the carriage including a bearing structure having first and second bearing races with the first bearing race secured to the flyer drive shaft, and the third and fourth gear surfaces being fixed together to prevent relative motion therebetween and being supported, in oppositely facing relationship, from the second bearing race; said bearing races being relatively movable about a second axis of rotation disposed at a preselected angle relative to the first axis of rotation, whereby the third and fourth gear surfaces execute a rotationless wobble motion as the flyer drive shaft rotates and whereby winding material may be moved generally axially along the first region and radially away from the first axis and toward the second region along an angularly moving passageway extending between the first mechanism and machine frame.

7. The structure of claim 6 wherein the first and second bearing races are concentrically supported relative to the second axis of rotation and the first and second bearing races are supported from the flyer drive shaft eccentrically relative to the first axis of rotation.

8. A winding machine for generating turns of winding material about form means, the machine comprising a frame; winding turn generating means comprising a shaft supported by the frame for rotation about a first axis of rotation, a flyer arm spaced from the shaft a pre selected radial distance and rotatable with the shaft in a predetermined path, and a winding material passage for winding material having a first portion extending in a generally axial direction along the shaft and a second portion located axially between a predetermined portion of the frame and the form means, and extending generally radially toward the flyer arm; said form means including a coil form disposed axially beyond the generally radially extending second portion of the passage; and locking means for preventing rotational movement of the form means about the first axis of rotation while establishing an opening, continuously and synchronously movable with the flyer arm, along which a portion of the winding material may extend; said locking means including a first gear surface fastened in stationary relationship with the predetermined portion of the frame, a second gear surface interconnected with said coil form to prevent relative rotation between said second gear and coil form, and other gear means extending between the first and second gear surfaces; said first and second gear surfaces being spaced apart axially along the first axis; said other gear means instantaneously meshing with diametrically oppositely located portions of the axially spaced apart first and second gear surfaces respectively; and eccentric means driven by said shaft for controlling the instantaneous engagement of the other gear means with the first and second gear surfaces, whereby the winding material passage, flyer arm, and eccentric means move in synchronism during every revolution of the flyer arm with an unobstructed winding material passage being maintained between the axially spaced apart first and second gear surfaces.

9. The structure of claim 8 wherein the other gear means includes a deformable spline supported for meshing engagement with the first and second gear surfaces.

10. The structure of claim 8 wherein the eccentric means includes a bearing structure having first and second bearing races with the first bearing race secured to the shaft, the other gear means comprises third and fourth gear surfaces fixed against relative motion and supported in oppositely facing relationship from the second bearing race; said bearing races being relatively movable about a second axis of rotation disposed at a preselected angle relative to the first axis of rotation, whereby the third and fourth gear surfaces execute a rotationless wobble motion as the shaft rotates.

11. The structure of claim 11 wherein the eccentric means includes first and second bearing races concentrically supported relative to a second axis of rotation and the first and second bearing races are supported from the shaft eccentrically relative to the first axis of @23 3? UNITED sTATEs PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 732 897 D t d May 15 19 73 Inventofls) Richard 8. Arnold and Dallas F. Smith It is certified that error appears in the above-identified patent and that said Letters Patent; are hereby corrected as shown below:

In column 3, line 31, cancel "cyclincal and-insert -cyclical--. I

v In column 10, line 39, cancel "11" and insert -l'0- Signed and sealed this 27th day of November 1973.

Attest: v I

EDWARD M.FLET( IHER,JR. RENE D. TEGTMEYER Attestlng Of'flcer Acting Commissioner of Patents 

1. Apparatus for developing turns of winding material for ultimate assembly with a magnetic core, the apparatus comprising a machine frame; flyer means rotatable about a first axis of rotation for developing winding turns about the first axis of rotation; winding material guiding means directing winding material in a direction generally radially relative to the first axis of rotation; a drive member rotatable about the first axis of rotation and extending longitudinally in the direction of the first axis of rotation for supplying motive power to the flyer means; a first device including coil shaping means about which at least a portion of the flyer means is movable; and meshing means interconnecting said first device and machine frame for locking said coil shaping means against rotation about the first axis of rotation during movement of the flyer means and for establishing an unobstructed generally radially directed shutter passage, continuously movable along a predetermined path in synchronism with the flyer means, through which winding material may be fed generally radially relative to the first axis of rotation; said meshing means including first and second members spaced axially apart along the first axis and wobble means; the first member being secured against rotation relative to the machine frame and having a meshing surface extending around the first axis; the second member being secured against rotation relative to the coil shaping means and having a meshing surface extending around the first axis; and said wobble means meshing continuously with the meshing surfaces of the first and second members and constraining the second member from rotation about the first axis relative to the fiRst member; said wobble means including a carrier having first and second bearing parts concentrically disposed about a second axis disposed in non-parallel relation to the first axis of rotation, the first bearing part being locked for rotation with said drive member and the second bearing part being constrained from rotation by the meshing of the wobble means and the first member; rotation of the first bearing part relative to the second bearing part causing the second bearing part to execute a rotationless wobble motion during rotation of the flyer means; said guiding means, wobble means, and flyer means all being movable in synchronism with one another, with the wobble means establishing the unobstructed substantially radially directed shutter passage for winding material being fed generally radially between the axially spaced apart first and second members.
 2. The structure of claim 1 wherein the first and second members each include a gear face comprised of a plurality of gear teeth and the wobble means includes gear teeth meshed with the gear teeth of the first and second members.
 3. The structure of claim 1 wherein the first member comprises a first gear face, the second member comprises a second gear face, and the wobble means comprises at least one pair of gear faces supported by the carrier and interconnected to prevent relative movement there-between, said at least one pair of gear faces comprising third and fourth gear faces; the first and third gear faces each having the same number of teeth and meshing with one another, and the second and fourth gear faces each having the same number of teeth and meshing with one another.
 4. The structure of claim 1 wherein the coil shaping means and flyer means are relatively movable in an axial direction.
 5. The structure of claim 1 wherein the first and second bearing parts mutually trap a plurality of anti-friction bearing members.
 6. Apparatus for developing turns of winding material for ultimate assembly with a magnetic core, the apparatus comprising a machine frame; flyer means for developing winding turns about a first axis of rotation; a first mechanism about which a portion of the flyer means is movable; means for locking said first mechanism against angular movement relative to the frame, and for establishing a shutter opening, continuously movable along a predetermined path in synchronism with the flyer means, through which segments of winding material may be fed from a first region proximate to the first axis to a second region spaced a different radial distance from the axis than the first region; a first gear surface carried by the machine frame; a second gear surface carried by the first mechanism; the means for locking including a locking structure comprising a single carriage and at least one pair of gear surfaces comprising third and fourth gear surfaces supported by said carriage; the third gear surface meshing with the first gear surface, and the fourth gear surface meshing with the second gear surface; the flyer means including a flyer drive shaft rotatable about the first axis of rotation, the carriage including a bearing structure having first and second bearing races with the first bearing race secured to the flyer drive shaft, and the third and fourth gear surfaces being fixed together to prevent relative motion therebetween and being supported, in oppositely facing relationship, from the second bearing race; said bearing races being relatively movable about a second axis of rotation disposed at a preselected angle relative to the first axis of rotation, whereby the third and fourth gear surfaces execute a rotationless wobble motion as the flyer drive shaft rotates and whereby winding material may be moved generally axially along the first region and radially away from the first axis and toward the second region along an angularly moving passageway extending between the first mechanism and machine frame.
 7. The structure of claim 6 wherein the first and second bearing races are conceNtrically supported relative to the second axis of rotation and the first and second bearing races are supported from the flyer drive shaft eccentrically relative to the first axis of rotation.
 8. A winding machine for generating turns of winding material about form means, the machine comprising a frame; winding turn generating means comprising a shaft supported by the frame for rotation about a first axis of rotation, a flyer arm spaced from the shaft a preselected radial distance and rotatable with the shaft in a predetermined path, and a winding material passage for winding material having a first portion extending in a generally axial direction along the shaft and a second portion located axially between a predetermined portion of the frame and the form means, and extending generally radially toward the flyer arm; said form means including a coil form disposed axially beyond the generally radially extending second portion of the passage; and locking means for preventing rotational movement of the form means about the first axis of rotation while establishing an opening, continuously and synchronously movable with the flyer arm, along which a portion of the winding material may extend; said locking means including a first gear surface fastened in stationary relationship with the predetermined portion of the frame, a second gear surface interconnected with said coil form to prevent relative rotation between said second gear and coil form, and other gear means extending between the first and second gear surfaces; said first and second gear surfaces being spaced apart axially along the first axis; said other gear means instantaneously meshing with diametrically oppositely located portions of the axially spaced apart first and second gear surfaces respectively; and eccentric means driven by said shaft for controlling the instantaneous engagement of the other gear means with the first and second gear surfaces, whereby the winding material passage, flyer arm, and eccentric means move in synchronism during every revolution of the flyer arm with an unobstructed winding material passage being maintained between the axially spaced apart first and second gear surfaces.
 9. The structure of claim 8 wherein the other gear means includes a deformable spline supported for meshing engagement with the first and second gear surfaces.
 10. The structure of claim 8 wherein the eccentric means includes a bearing structure having first and second bearing races with the first bearing race secured to the shaft, the other gear means comprises third and fourth gear surfaces fixed against relative motion and supported in oppositely facing relationship from the second bearing race; said bearing races being relatively movable about a second axis of rotation disposed at a preselected angle relative to the first axis of rotation, whereby the third and fourth gear surfaces execute a rotationless wobble motion as the shaft rotates.
 11. The structure of claim 11 wherein the eccentric means includes first and second bearing races concentrically supported relative to a second axis of rotation and the first and second bearing races are supported from the shaft eccentrically relative to the first axis of rotation. 